日志管理增强：登录补全角色、IP兜底、记录业务对象与决策

- 登录日志从用户表补全 actorId/actorName/role
- IP 兜底：X-Forwarded-For/X-Real-IP → 否则用连接信息(getConnInfo)
- 业务动作记录目标项目名(target_name)与决策(风控审核·通过/管理层审批·驳回/红线裁定·命中)
- system_logs 增加 target_name 列；前端日志页显示项目名

web/src/api/client.ts

@@ -993,6 +993,7 @@ export interface SystemLogItem {
   method: string;
   path: string;
   targetId: string | null;
+  targetName: string | null;
   status: number | null;
   success: boolean | null;
   durationMs: number | null;

web/src/pages/SystemLogs.tsx

@@ -116,7 +116,8 @@ export function SystemLogs(): JSX.Element {
                       <td style={{ ...td, whiteSpace: 'nowrap', color: colorVar('color.text.primary') }}>{it.action}</td>
                       <td style={td}><span style={{ fontFamily: 'monospace', fontWeight: 700, color: it.method === 'DELETE' ? '#BE123C' : it.method === 'PUT' ? '#B45309' : '#2563EB' }}>{it.method}</span></td>
                       <td style={{ ...td, maxWidth: 320, wordBreak: 'break-all', color: colorVar('color.text.secondary') }}>
-                        {it.targetId && <span style={{ color: colorVar('color.text.primary'), fontWeight: 600 }}>{it.targetId}</span>}
+                        {it.targetName && <div style={{ color: colorVar('color.text.primary'), fontWeight: 600 }}>{it.targetName}</div>}
+                        {it.targetId && !it.targetName && <span style={{ color: colorVar('color.text.primary'), fontWeight: 600 }}>{it.targetId}</span>}
                         <div style={{ fontFamily: 'monospace', fontSize: '11px' }}>{it.path}</div>
                       </td>
                       <td style={{ ...td, whiteSpace: 'nowrap' }}>